SEOUL -- President Lee Jae Myung has touted the country's first mass-produced homegrown KF-21 fighter jets as a symbol that embodies "aspirations for self-reliant defense," vowing to make South Korea one of the world's top four defense powers.Speaking at a ceremony Wednesday for the first delivery of the fighter jets, which came after years of development and prototype testing, Lee also pledged to invest more in high-end aircraft technologies."South Korea has finally secured weapons to protect peace with its own technology not only on land and sea but also in the air," Lee said during the c…READ FULL ARTICLE